One of the most important things you can do on Twitter is to secure your Twitter username as once someone has taken it, it is gone and there is nothing you can do about it. Once you have secured your Twitter username you may then want to spend some time planning how you are going to utilise Twitter. How can you do this without it looking like you have abandoned your Account?
Simply, go to your Twitter account, then click on the cog, then settings, then security & privacy tab, then half way down you will see ‘Tweet Privacy – Protect My Tweets’ box.
Simply tick this box. By doing so, Your Twitter account will not be visible to the outside world and no one will be able to follow it without you approving them. I would also suggest that in the Bio you actually write that you are planning what you are about to do and will launch the account very soon.
By doing this, you have secured your Twitter username and it will not appear as though you have abandoned or neglected your account. Remember though to untick the ‘protect my tweets’ box once you want to officially launch your account unless of course you want it to remain a private & by approval account only.